grow worse; "Conditions in the slum worsened" make worse; "This drug aggravates the pain
If a bad situation worsens or if something worsens it, it becomes more difficult, unpleasant, or unacceptable. The security forces had to intervene to prevent the situation worsening These options would actually worsen the economy and add to the deficit They remain stranded in freezing weather and rapidly worsening conditions. improve. to become worse or make something worse improve